You think that thumb drive is rather new invention?
Well, this is a portable disk from late 80s, sold to mid-90s. In 1993
it was expanded to 100 or 200MB, in 1995 to 500MB but this little drive is 40MB. Inside,
there's a 2.5" IDE notebook hard drive connected to module, which allows
it to be plugged to parallel port of PC. Power is taken from keyboard
connector. Drivers can be stored on a boot disk taken with the disk to
access data in every DOS computer.

Unfortunately PHd made by KT Technology is not easy
expandable - it allows to put only a disk which was designed to, not
larger one, and DOS driver is dedicated for drive size.

Last units or clones contained
Shuttle's EPAT parallel-to-IDE chip installed on EPEZ
module. Theoretically it could be upgraded with bigger hard disk.

Manufacturer:
KT Technology

Type:
Portable disk

Capacity: 40MB

Review from Chip magazine, 06.1995 [Polish]

Drivers:

Win 95 - not tested, probably incomplete,
very poorly written driver. Code is from DOS driver from 1993.